It is already known that Sun is on an accretion disc of Milky Way; this is a surface of the galactic vortex, enigma of a spiral structure galaxy resembles with votical movement could be explained with singular vortex mechanism illustrated in the hypothetical model of Universal Vortical Singularity. The phenomenon of wind up spiral arms is as a result of those stellar materials on the accretion disk are drawn toward the center at a near similar angular velocity, on overlapping harmonic vortices with different phase angle that revolve around the galatic center. Therefore, Sun spiraling on the galactic vortex could be gradually moving nearer to the congested Galactic center. This phenomenon can be mathematically described in a simplified manner by Bernoulli's principle on an inversed rocket nozzle model. Accretion disc (astronomy) is one of the unsolved problems in physics.

The accretion disc has typical characteristics of a free vortex, with similar behaviors such as the movement of congested clouds on a tropical cyclone. This explained the orbital speed of most stars in the galaxy does not depend strongly on its distance from the center; the typical stellar velocity of Milky Way is between 210 and 240 km/s is likened to moving traffic jam on a highway, is a feature of votical movement that is unlike characteristics of orbiting objects.

Several galactic spheroids, conceptually visualized with its galaxies

"Collided" galactic spheroids

Excerpt from Wikipedia - The diameter of the Virgo Supercluster is about 200 million light years; it contains about 100 galaxy groups and clusters and is dominated by the Virgo cluster with approximately 1300 member galaxies near its center. Our Local Group comprises over 30 galaxies (with its gravitational center located somewhere between the Milky Way and the Andromeda Galaxy) is located near the edge and is being drawn inward toward the Virgo cluster. The total number of super clusters in the universe is believed to be close to 10 million.

Ultra Galaxy Cluster on ultra galactic vortex (hypothetical) with close to 10 million super clusters - Virgo Supercluster with 100 groups and clusters - Local Group of more than 30 galaxies - Milky Way with 150 globular clusters and dwarf galaxies. Ultra cosmic vortex (UGC) - Cosmic vortex (SC) - Satellite cosmic vortex (G&C) - Galactic vortex (Galaxy) - Satellite galactic vortex (GC&DG).

Hypothetically, based on the model of Universal Vortical Singularity, those 10 million super cluster of galaxies on their enormous molecular super galactic spheroids are on an ultra galactic vortex revolving around an ultra galactic center; the geometrical structure of the observable universe is the paradigms of ultra galactic spheroid and ultra galactic vortex in progressive orders that have homogeneously interweaved.

The very fundamental interactions of nature is a steady state origin in precession that has formed an ultra galactic vortex through singular vortex mechanism, and with the similar singular vortex mechanism it has spawned harmonic vortices dilated in progressive order. In a progressive harmonic series, the progressive order of cosmic vortical structure with the harmonic vortices on their spheroids from a higher order of a hypothetical ultra galaxy cluster, is in the order of ultra galaxy cluster (hypothetical), galaxy superclusters, galaxy clusters, main galaxies, dwarf galaxies. See paradigm of suspended spheroid in the universe and the vortical universe model of Universal Vortical Singularity. Image on right is an artist impression of a vortical universe model from blaze labs research for illustration purposes only.

Universal Vortical Singularity predicts that the fabric of Cosmo is vortically sustained by singular vortex mechanism in self-perpetual motions.

The unusual galaxy cluster CL0024+17 in the middle of the superimposed image is surrounded by an enormous ring that spans about five million light-year; the patterns of furrows has infers the vortical origin of this galaxy cluster. This huge galaxy cluster has shown characteristics that it is on an enormous cosmic vortex.

Hypothetically, based on the model of Universal Vortical Singularity, galactic spheroids with galaxies spawned on it are consolidated in a vortical action forms as a galaxy cluster on a much larger galactic spheroid (hereby refers as cosmic spheroid). The superimposed image with enormous rings and spokes outlined a much larger galactic vortex (hereby refers as cosmic vortex) that infers a huge cosmic spheroid (beyond the image) that dwarfs a galactic spheroid in comparison. The typical speed of a galaxy is about 1000 km/s is also a characteristic of vortical movement.

The left image was produced by superimposing the dark matter distribution map on a Hubble optical image of the cluster as shown on right. Image credit: Credit: NASA, ESA, M.J. Jee and H. Ford (JHU)

Superimposed image

Singular vortex mechanism is the fundamental force dynamics of the universe, the undulating wavefunctions have formed the fabric that hold and sustain the universe in oneness. Singular vortex is also a universal mechanism that nature naturally creates from a nothingness at all levels to function as power generator, from atomic level to cosmic level in different states of matter.

Through a dominant singular vortex, many generations of offspring vortices and interrelated singular vortices are formed in a progressive vortical paradigm arrangement. Hypothetically, an ultra galaxy is created and driven by an ultra galactic vortex on an ultra galactic spheroid, this in turn drives those molecular galactic spheroids to form galactic vortices in them that spawns galaxies.